1
: a triatomic very reactive form of oxygen that is a bluish irritating gas of pungent odor, that is a major air pollutant in the lower atmosphere but a beneficial component of the upper atmosphere, and that is used for oxidizing, bleaching, disinfecting, and deodorizing
2
: pure and refreshing air
relished the ozone of morning
Examples of ozone in a Sentence
Scientists are concerned about ozone depletion.
A light breeze filled the rooms of our seaside cottage with ozone.
Recent Examples on the Web
Kroger’s agreement to remedy refrigeration leaks Kroger agreed to retrofit or replace 600 large commercial refrigeration systems in its stores to reduce ozone-depleting emissions, the DOJ said.
—
Charlotte Observer, 1 May 2026
Hearing evidence indicated that Ali administered intravenous vitamin C and garlic oil, along with oxygenated water, sodium bicarbonate and ozone therapy, which an expert witness said were not supported by any clinical evidence as cancer treatments.
—Angelique Brenes, PEOPLE, 1 May 2026
The landfill release also contributed to ground-level ozone, which the Sacramento Metropolitan Air Quality Management District has described as one of the key air quality concerns in the region.
—Chaewon Chung
april 30, Sacbee.com, 30 Apr. 2026
Ground-level ozone is generally considered to carry a lower mortality risk.
—Theresa Gaffney, STAT, 30 Apr. 2026
See All Example Sentences for ozone
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Charlotte Observer, 1 May 2026
Hearing evidence indicated that Ali administered intravenous vitamin C and garlic oil, along with oxygenated water, sodium bicarbonate and ozone therapy, which an expert witness said were not supported by any clinical evidence as cancer treatments.
—Angelique Brenes, PEOPLE, 1 May 2026
The landfill release also contributed to ground-level ozone, which the Sacramento Metropolitan Air Quality Management District has described as one of the key air quality concerns in the region.
—Chaewon Chung
april 30, Sacbee.com, 30 Apr. 2026
Ground-level ozone is generally considered to carry a lower mortality risk.
—Theresa Gaffney, STAT, 30 Apr. 2026
See All Example Sentences for ozone
Cite this Entry
“Ozone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ozone. Accessed 10 May. 2026.
Copy CitationKids Definition
ozone
noun1
: a form of oxygen that is a bluish irritating sharp-smelling gas containing three atoms per molecule, and that is used especially in disinfecting, deodorizing, and bleaching
2
: pure and refreshing air
Medical Definition
ozone
noun
: a triatomic very reactive form of oxygen that is a bluish irritating gas of pungent odor, that is formed naturally in the atmosphere by a photochemical reaction and is a major air pollutant in the lower atmosphere but a beneficial component of the upper atmosphere, and that is used for oxidizing, bleaching, disinfecting, and deodorizing
Love words? Need even more definitions?
Merriam-Webster unabridged
